Table 3.8 Cumulative Exposure to Pulmonary Stressors and Forced Vital CapacityAmong Workers in a Sample Taken at a Plant Employing 1200 Workersworkerexposure +fvc*popsizewt11381120030236412003038512003042911 2003036012003019712003071821200301991200303961 200301039112003011711200301238812003013841200301438512003015377120030163761 20030173621200301836712003019391120030202991 20030212701200302216412003023372120030242721200302539512003026396120030273621200302836712003029395120030308712003031384120030323891200303338912003034365120030353671200303636912003037380120030383981200303936512003040384120030*Percentage of the value expected on the basis of age, gender, and race.t "1" = low; "2" = medium; “3" = high. 6.2 Let us suppose that the data from Table 3.8 were obtained from a stratifiedrandom sample of the 1200 workers in the plant in which the workforce wasstratified according to pulmonary stressors (high, medium, low) and that pro-portional allocation was used to allocate the sample.EXERCISES185a. How many workers are there in each stratum?b. Estimate the mean forced vital capacity among the workers in the plant.How does this estimate differ from the mean that would have been ob-tained if the sample had been taken by simple random sampling?c. Obtain a 95% confidence interval for the population mean.d. What is the gain from stratified random sampling over what would havebeen obtained from simple random sampling?

Here population is 1200(i.e. workers employing at a plant). Out of 1200 sample is taken of size 40.…

Answered: a. How many workers are there in each…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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